Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8002377 | Journal of Alloys and Compounds | 2013 | 5 Pages |
Abstract
Machining chips of the alloy AA7050 were reprocessed by spray forming followed by hot-extrusion and heat treatment. The spray-formed deposit presented a microstructure with hardening ηⲠprecipitates within the matrix and equilibrium η precipitates at the grain boundaries, refined grains and low segregation of the main elements Zn, Cu and Mg. The final microstructure at peak aged condition is mainly composed by Guinier-Preston (GP) zones, ηⲠmetastable, η equilibrium , Al3Zr dispersoids and the coarse Al7Cu2Fe intermetallic. A well-defined precipitation free zone along grain boundaries was not observed. Good mechanical properties were achieved.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
E.M. Mazzer, C.R.M. Afonso, M. Galano, C.S. Kiminami, C. Bolfarini,